Performance Characteristics of Mixed Irradiated n-MCz Thin Silicon Microstrip Detector for the HL-LHC Experiments

TL;DR

This paper develops a detailed radiation damage model for n-MCz silicon detectors, validated against experimental data, to optimize their performance for high-energy physics experiments like the HL-LHC.

Contribution

It introduces a four-level deep-trap mixed irradiation model for n-MCz Si detectors, enhancing understanding of radiation effects and aiding detector design for future collider experiments.

Findings

Good agreement between experimental data and model predictions.

Model accurately extrapolates full depletion voltage at higher fluences.

Provides insights for optimizing silicon detectors in high-radiation environments.

Abstract

Within CERN RD50 Collaboration, MCz Si was identified as a best material for the detector used in the high luminosity collider experiments. The n in p Si detectors were utmost radiation hard detectors, which can be used for the phase 2 upgrade plan of the new Compact Muon Solenoid tracker detector in 2026. The choice of n or p-MCz Si material depends upon the high electrical charge collection efficiency performance of these detectors over n or p-FZSi detectors. The bulk radiation damage model for n, p-MCz Si need to develop for the designing, development and optimization of the advanced detectors for the next generation High Energy Physics experiments. In this work, an advanced four level deep-trap mixed irradiation model (E5, CiOi, E(30K), H(152K)) for n-MCz Si is proposed by the comparison of experimental data on the full depletion voltage and leakage current to the Shockley Read Hall recombination statistics results on the mixed irradiated n-MCz Si PAD detector. Prediction uncertainty in the radiation damage mixed irradiation model considered in the full depletion voltage and leakage current, which was due to the uncertainty in macroscopic results from an experimental measurement on the mixed irradiated n-MCz Si pad detector. A very good agreement is observed in the experimental and SRH results on the full depletion voltage and leakage current. This model is also used to extrapolate the value of the full depletion voltage at different mixed (proton + neutron) higher irradiation fluences for the thin n-MCz Si microstrip detector